[D] Diffusion research interview experience?

Reddit r/MachineLearning / 3/31/2026

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Key Points

  • The post is asking for real interview experience and preparation guidance for Research Scientist/Research Engineer roles focused specifically on diffusion models.
  • It requests details on what interview questions typically cover, including whether candidates need system design and LeetCode-style preparation in addition to diffusion theory.
  • The author is looking for the most common diffusion-related topics and how the balance differs between RS (theory/proofs/derivations) and RE (implementation, scaling, evaluation, and modality or application adaptations).
  • It also asks whether interviews include paper critiques, on-the-spot research extensions, or brainstorming new research directions.
  • The author notes that generic ML/LLM interview advice is easy to find, but diffusion-specific interview prep information seems scarce.

Sorry in advance, these might be bad questions, as I don't have any interviews right now and thus no specific questions, but I'm trying to get a realistic picture of what technical questions come up when interviewing for Research Scientist or Research Engineer roles focused on diffusion, so I can prepare better in the future.

Here are some things I'm wondering about, but feel free to include other stuff not listed here, also don't have to answer all questions:

  • How did you prepare? Any specific papers, books, courses etc?
  • What kind of questions did they ask? Did you also need to prepare for system design and leetcode questions?
  • What specific diffusion-related topics came up most often?
  • For RS: Were there proof-heavy questions, derivations from scratch or discussions of open theoretical problems?
  • For RE: How much emphasis was there on implementation details, scaling, evaluation, or real-world adaptations (to like different modalities I guess or real use cases)?
  • Did they ask you to critique recent papers, propose extensions to existing diffusion work, or brainstorm new research directions on the spot?
  • Any surprising or unusually hard technical questions you remember?

Thanks in advance!

Edit: I googled around, but couldn't find anything specific to interviews with diffusion. Seems to be an abundance of advice for general ML/DL theory and LLM theory, but nothing specific to diffusion.

submitted by /u/total_expectation
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